I did a leaching (flush) on one of my plants, started with the container quantity of water, waited 30 minutes and the plant was leached again with the same quantity of water. After I added the normal dosage of fertilizer. The plants enter the fourth week of flowering. Three days later the result is really positive, the foliage is improving, the plant gain 3 centimeters over the others, and the buds growth bigger. Now I did the same with the other plants. Surely there was too much fertilizers salt accumulated in the plants, and also the run off PH was too low, so leaching with water at a PH of 7, probably helped to increase the PH in the normal range for a soil growing, around 6.5. I will introduce the leaching as a normal maintenance for my plants on a two week basis. In the nature the rain is doing that job but growing inside it have to be done manually.I should also emphasise the fact that I was very prudent with the use of fertilizers...Week one, 25 % of the recommended dosage (vegetative stage)Week two, 50 % of the recommended dosage (vegetative stage)Week three, 75 % of the recommended dosage (vegetative stage)Week four, 100 % of the recommended dosage (vegetative stage)Week five, 50 % of the recommended dosage (flowering stage)Week six, 100 % of the recommended dosage (flowering stage)Thanks.